Stud or valve setting tool



Sept. 19, 1950 G, F, FREER 2,522,817

STUD OR VALVE SETTING TOOL Filed Oct. 16, 1944 4 Sheets-Sheet l t Il A 7/ .3 llf/ f/ Sept. 19, 1950 G.` F. `FRL-3ER 2,522,817

STUD 0R VALVE SETTING Toor.

Filed 001'.. 16, 1944 4 Sheets-Sheet :2

Gor/7am feer.

Sept. 19, 1950 G F FREER STUD OR VALVE SETTING TOOL med oct 1e, 1944 Sept. 19, 1950 G, F. FRI-:ER 2,522,817

STUD 0R VALVE SETTING TOOL Filed Oct. 16, 1944 4 Sheets-Sheet 4 gnam/wim @0r/2am E Traer Patented Sept. 19, 1950 2,522,817 i STUD R VALVE SETIINGHIOOL` Gorham 1*". Freer, Arlington, Va., assigner to Mueller Co., Decatur, Ill., a corporation of Illinois Application October 16, 1944, Serial Nd. 558,958

10 Claims.

i i i l This invention relates to a tool for inserting threaded members of which corporation stops are an example.

The usual corporation stop comprises a body formed with a seat for a rotary plug, the body having oppositely projecting threaded nipples of which lone is intended for threading in an opening in a mainv and the other is intended to receive a service line coupling. When the main is under pressure which is to be held against substantial escape, a boring barrel is applied thereto, a hole is cut and threaded, and then the stop, through the intermediary of a special tool, is associated with the boring bar and then threaded Heretofore, the tool customarily used has included a shank securable to` the boring bar and a head having a threaded socket which is en`` gaged with the coupling nipple of the stop. Torque is transmitted from the tool to the stop by the axial jamming of some part of the tool with same part of the stop and, consequently, it has frequently happened that after the stop has been threaded in, the jamming effect will cause it to follow the tool when the latter is attempted to be unthreaded from the stop. The stop, being at the bottom of the 4drillingequipment, is not accessible to be held by a hand tool against threading out.

The main object of the present invention is to provide a tool which will transmit torque to the stop without any jamming action `and can be detached from the inserted stop without any danger of threading the latter out. The new tool is shown in several embodiments in the accompanying drawings in which Figure 1 shows an elevation of one embodiment of thetool in association with a corpora-` tion stop, i i

Figure 2 is a section on line 2-2 of Figure 1,

Figure 3 is a section on line 3--301 Figure 1,

Figure 4 is a fragmentary axial section of a modified form of tool,

Figure 5 is a section on line 5-5 of Figure 6,

Figure 6 is a fragmentary elevation, partly in section on line 6-5 of Figure 5, `of a further form of tool,

Figure 7 is a section on line 1 1 of Figure 8,`

Figure 10 is a fragmentary elevation offlaffur-` ther'form of tool, n l Figurel-l `is a fragmentary elevation of a-dfferent form of tool and a` different form of driven member with which the tool is about to be associated,

Figure 12 shows the parts of Figure l1 in operative association,

Figure 13 is an elevation of a further form of tool in association with a corporation stop,

Figure 14 is a view like that of Figure 13 with the tool in axial section,

Figure 15 `is a section on line l5' |5 of Figure 14,

Figure 16 is a fragmentary elevation of the tool of Figure 13,l l

Figure 17 is a fragmentary elevation, partly in section, showing a modification of the tool of Figure 13,

Figure 18 is an elevation of a further form of tool in association with a corporation stop,

Figure 19 is a view like that of Figure 18 but with the toolin axial section,

Figure 20i`s a plan view of the tool of Figure 18,

Figure 21 is a section, with a part omitted, on line 2I--2I of Figure 20, and

Figure` 22 is a fragmentary elevation partly in axialsection showing a modification of the tool of Figure 18.

Referring rst to Figures 1 to 3, reference letter S designatestg'enerally a corporation stop which, by way of example, is the same as that shown in the patent to Mueller et al., No.r2 ,33l,714, of October l2, 1943. The stop comprises a body 3| having a through passagecontrollable by a plug 32, the passage extending through oppositely projecting right-hand threaded nipples 33 and 34 of which` the former is intended for engagement in a threaded opening in a main and the latter is intended primarily for engagement by a service line coupling. Immediately adjacent the nipple 34, the body has a symmetrically disposed square formation 35.

,The tool T comprises a body 36 which includes a cylindrical head portion 3l and a coaxial shank portion 3S which is engageable in the socket of a boring bar. Head 31 has a coaxial socket 39 provided With threads 4D which are engageaible with the nipple 3'4. w

Surrounding the body Sii, and, specically, the head 3l, is a collar 4i which, as here shown, is provided with diametrically opposite jaws or abutment portions 42` having parallel faces 33 spaced apart a distance slightly greater than the length of a side of the square formation 35. Collar 41! is further provided with diametrically opposite, oppositely inclined, cam slots lli in which are engaged diametrically disposed pins it which are threaded into head 3l;

Assuming the tool is to be applied, the body 35 is turned relative to the collar 4l in a counterclockwise direction as seen from the right of Figure l so that pins will move to the opposite ends of slots it from that shown in Figure 1. The disposition of the cani. slots is such that this relative rotation causes retraction of collar 4l, i. e., movement toward the shank 58. Nipple 34 is now threaded for a distance into socket 39, whereupon the collar is held with the inner faces of jaws d2 parallel to faces of the square portion 35. With the collar held in this relation, the body 35 is threaded on enough further to bringr the pins i5 into the-slot ends as indicated in Figure l, thereby projecting (i. e., moving away from the shank 58) the collar lli so that the jaws 42 and 4.3 are caused to lie alongside faces of the square portion 35. In this procedure, care is taken not to thread the nipple 34 far enough into socket 35 so that there can be any possibility of axial jamming.

It will be seen that when the tool, applied to the stop as described, is turned in the threadingin direction of nipple 33, torque will be transmitted from the body 56 to the collar 4| through the abutment of pins l5 with the leading ends of their associated slots, the threaded engagement between the tool and the stop being relied upon solely for the purpose of holding the parts together during insertion.

When the stop has been fully threaded in, reverse rotation of the body 35 will cause the latter to unthread from the stop while, at the same time, pins 45, acting on those surfaces, 4l, of the slots which are adjacent shank 38, will retract the collar, thus clearing the jaw portions from the stop and permitting the complete unthreading of the tool.

It will be observed that the pins 55 have two essential functions, namely, (1) the transmission of torque from the body to the collar due to abutment with the leading ends of slots 44 and (2) the retraction of the collar through coaction with the inclined or cam faces 4I of the slots.

It will be evident that a single pin and slot connection could be used but at least two such connections are preferred as giving a balanced action. It will also be evident that for the driving and retracting actions, the only essential parts of the slots are their leading end walls and their side walls 4l.

In Figure 4, the illustrated arrangement is the equivalent of that just described, the difference being that the slot or groove 44 is formed in the head 3l while the pin 4'5' is threaded through the side wall of the collar 4I' so as to project into the slot. When the body 35' is turned in the inserting direction, the trailing end wall of the slot drives the pin 45 and therewith the collar 4|'. Upon reverse rotation of the body relative to the collar, the inclined wall 51 of slot 44', which is remote from the shank 38', acts on pin 46 to retract the collar, For convenience of reference, pins 45 and 45' will herein both be considered to be cam followers, the term applying to the pin d5 at least in that it moves along the cam face although it displaces the cam rather than the cam displacing it.

In Figures 11 and 12, I have shown a tool adapted for the insertion of a plug such as is shown in the patent to Bowan et al., No. 2,310,- 351, of Feb. 9, 1943. In common with the stop shown in Figures 1 and 2, the plug 5D of Figures 11 and 12 has two coaxial sets of threads and an eccentric portion adapted to be engaged by the abutment portion or portions of the tool. The plug 50 comprises an externally ythreaded portion 5l surmounted by an integral, diametrical rib 52 having an internally threaded socket 53 coaxial with portion 5l. The tool body 54 comprises the externally threaded head portion 55 and coaxial shank portion 55. A collar 5I surrounds the body, specifically the shank portion, and has the same pin and slot connection, 58 and 59, therewith as is shown in Figures 1 and 2. The collar has opposite jaw or abutment portions as at Gil which are spaced apart so as to be disposable alongside of the rib 52 in the manne1` indicated in Figure 12. The tool is applied in the same manner as previously described, care being used to avoid any axial jamming. It will be evident that when the tool body is rotated to move the pin 58 to the right, Figure 12, the collar will .be retracted to move the jaws above the top of the rib by the time pin 58 reaches the right-hand endof slot 59, thus permitting the complete unthreading of the tool without any unthreading effect, except for negligible thread friction, on the plug.

Figures 5 and 6 show another form of stop inserting tool. The cylindrical head 6| of the tool body is provided with a projecting arcuate cam rib 52 which is received in an annular recess 63 in the collar 64, the recess having end walls 65 and 55 which are spaced apart a distance greater than the length of rib 62. Reference numerals 61 and 55 designate screws threaded in radial holes in the collar to position their inner ends respectively above and below the rib, as particularly shown in Figure 6. In that gure, the lefthand end of the rib is against the end wall 55 ofgthe recess 63 so that when the tool body is turned, the collar 64, which is in projected relation, will be positively driven in the threadingin direction. When the stop has been inserted, reverse rotation of the tool body will cause the cam face 62 of rib 52 to lift collar 64 through pin 51 and thereby release the collar jaw or abutment portions from the stop, just as in the first embodiment. Obviously the rib could be on the collar, and the recess and screws in the head.

. Inethe stop inserting tool of Figures '7 and 8, the cylindrical head portion B9 of the tool body has a flattened portion l0 over which is swingable a toggle finger 'H which is pivoted to the heady portion by means of a screw 'I2 near the lower edge of the surface 1U. Finger H extends upwardly at an angle and trailingly as regards the threading-in direction, and has a nose porl tion received in the angle between the intersecting walls 73 and 'I4 of a recess 15 formed in the collar 16. The opposite rounded end of the finger-is in abutment with a recess wall 11 parallel to wall 14. In view of this arrangement, the co-llar cannot drop relative to the head below the position shown but it may be pulled upwardly, in order to enable the stop to be threaded into the head socket, and then projected to the position shown in Figure 8, so that the collar jaws are in'position to turn the stop. Torque is transmitted from the head to the collar through the abutting portions of finger 1l and wall Tl. When the stophas been inserted, reverse rotation of the tool body will move finger 1i and screw 'l2 to the right relative to the collar, thereby moving the finger toward an upright position and lifting the collar jaws clear of the plug so that the tool caribe completely unthreaded Without disturbing the stop. Obviously the finger could beA on the collar, and the recess in the head.

escasez-x Figures. 9- and. le the head portion 1eA is` presided externally. with a` circumierentiallr exey tending slot or groove. 1.9.1 whose` bottom wall is. Provided with bevel gear teeth. 8.9. The collar 8lprov-ided with an. axiallyextending,Y slot 92. whose rightehand: wall, Fig-.ure 10;, is provided` with gear teeth 93. Reference numeral 8.1i,A designates generally a floating roller constituted at one end, 85,` as a. bevel gear engaging theteeth.

89. and atthe other. end. as av spur gear 96 engaging the teeth 83. The teeth` 85. are. held in er1-.- gagement with the; teeth 99by the. top wall or slot 89. while the teeth 89.` areheld in engagement with.

ter-clockwise direction, Figure 10., so that teeth.

86 will` movel the rack 8.3. upwardly to release thev collar jaws. In Figure 9g a plate 8.1 is shown as closing the outer side of slot 8.2 so as to hold the roller 84 in. place. In Figure. 110i plateB! is omitted for the sake of clarity.v

In Figures 13 to 16` there is. shown a stop inserting` tool which relies on. spring action for retraction. of the collar. In this case, the collar 9B is somewhat wider' than. in the previously described stop, inserting tools and is provided, near its, edge which isA adjacent the shank` 89, with.

an annular, internal groove 9.9. The collar is provided, as here indicated,` with three equi-distantly spaced' angular slots9| each of which has a circumferentially extending portion 92 and an axially extending portion 93, and` engaged in each slot is a. screw 94 which is radially threaded into the head 95. A number of leaf springs 96 are secured to the top. of the head by screws 91' and haveV their free ends in channel 99 engaging the wall 98 thereofso as to act to retract the collar relative to the tool body as limited by the screws 94, as shown in Figure 16. With the collar in this relation, the stopis threaded in the head' socket a short distance whereupon the collar is pulled against the action or springs 961 to position its :law portion orportions alongside thesquare` portion of the stop` body. Hereupon, thetool body is turned to bring the screws 94 into the horizontal portions 92? or the slots and into abutment with the end walls thereof through which torque is transmitted to. theV collar in thefthreading-in direction, the screws holding the collar projected by reason of their presence in the slot portions- 92. When the stop has been fully inserted, reverse` rotation of the .tool body bringsscrews 94 into register withY theaxially extending slot por tions 93` and thereupon springs 96` act to retract the` collar and free the jaws, froml the stop.

In assembly, the collar is slipped over the head and then the springs are successively placed inl position and the screws 91` applied'. The inner ends of the springs` areshaped for. abutment with the shank 89- so as to. prevent their pivoting.r

Since the` outer ends or the springs have only a` frictional engagement. with the. collar, substantially free relative rotationv of the tool body and collar is permitted within the: limits determined.

byl screws 94;

Figure 17.- shows` a reversal of the arrangement, just described in thatthe angular slot. or groove: 9|' is formed-in the head 9.5 and the'screw 94 is threaded in an axial holdin the collarto bring,

6 its inner" end into the slot 99;. The pin. 9.4.' is shown in the position which it occupies' during; the;` threading-in operation.

Returning tol Figures 18 to` 21, which illustrate another form. of; stop inserting tool, the collar lill` is, provided. with an annular, internal groove |92` from which. axially directed grooves |93 and. |94` extend` toward` the` jaw end of the; collar. Pivoted. on a. pin` |95; in a recess |99of, the collarv is adog |941 havingadepending; end inthe channel'. |921; Referring to Figure 21, the dog can swing freely in a` clockwise direction but is held against` swinging4 in counter-clockwise direction dueto abutment with the right-hand wall. I 98 of the recess |96. Reference numerals. |991and ||9 designate; screwsy threaded in diametrically opposite. holes. in the. collar with their heads in the; channel |92, the screws being successively intro duced through aA hole. provided in the collar at; the channel. |92 forithat purpose.

When` the: tool is to be applied toithexstop, the screws |199.- and llrtl` are brought over the axially extending grooves |93 and` |94 so that the collar can beretracted. When thetool and stopthreadshave been sufficiently engaged, collar is projected so that the screw heads are brought into` channel |92. When. the tool` body is now turned, one; of' the screw heads, moving. to the; right,.Figurei 21,` will strike dog |191 so that` torque will be transmitted to the collar and` the, stop will. be driven. Thereafter, the tool body can. be completely' threaded cti', turning relative to the` collar as permitted by the swinging of.' the dog |91;

Figure 22 shows a reversal of` the structurejllst' describedr in that the channel |92.' is. formed in the. head portoninstead of in the collary and the dog |01! ispivoted in a head recess |961.. Diametrically` opposite grooves, as at |193', extend. axially from the channel |92.' in the direction of the: shank; Screws |991' and-I` H9 are threaded in diametrically opposite. openings. of the collar 1.9.3! to bring their inner ends into the channel |92?. The operation is the samev asdescribed in connection with Figures 18 tol21.

The collar of each of the described tools is shown as having a pair of jaw or abutment por--` tions` Aisingle such portion could be usedbut two give a better balanced action, Actually the jaw portions could be parts of` a complete socket shapedto receive the portion, as at 35, of the member to beV turned, and this latter portion may be of any non-circular form. It is only necessary that the mem-ber to be insertedhave an eccentric abutment portion engageable` andl releasable by. an abutment portion of the tool? in the manner which has been` described. The invention is not. necessarily limited to the disclosed forms and ar-l rangements of parts, variationsbeing possible and:A contemplated under the following claims.

I claimt:

l. A tool for turning a member having twoncoaxial` sets: of threads of which one is` to be en-l gaged with the mating threads ofV aA stationaryA element byy the'` turning of said member, said. memberincluding an` abutment portion eccentricv with respect tothe axisof said sets of threads; said tool comprising` a body including. aA head por-` tion. threaded for l engagement withu the other of said sets` ofr threads upony rotation of said head? portion'` relative tosaid member in the same di-l rection in which. said. member is; to be turned` fon engaging said one set of threads' with said;.mating threads, whereby to hold the member; to the tool said body comprisinga. shank'portion-.iixed to. said heed Port-.ions coaxially; therewith-.ia Collar axifllill sl'idable and rotatable on said body and having` an abutment portion on its side toward the free end of said head portion; said collar being maintainable retracted from said member while said head portion is being engaged therewith and then being movable toward said member to 4bring the abutment portion of said collar, prior to any jamming between said lbody and member, into position to engage the abutment portion of said member upon the turning of said collar relative to said member; cooperating abutment means on said collar and said body engageable to transmit torque from said body to said collar in the threadengaging direction but permitting reverse rotation of said body relative to said collar, and means arranged between said body and collar acting upon such reverse rotation to retract the collar so as to free said abutment portions.

2. A tool for turning a member having two coaxial sets of threads of which one is to be engaged with the mating threads of -a stationary element by the turning of said member, said member including an abutment portion eccentric with respect to the axis of said sets of threads; said tool comprising a body including a head portion threaded for engagement with the other of said sets of threads upon rotation of said head portion relative to said member in the same direction in which said member is to be turned for engaging said one set of threads with said mating threads, whereby to hold the member to the tool; said body comprising a shank portion fixed to said head portion coaxially therewith, a collar axially slidable and rotatable on said body and having an abutment portion on its side toward the free end of said head portion; said collar being maintainable retracted from said member while said head portion is being engaged therewith and then being movable toward said member to bring the abutment portion of said collar, prior to any jamming between said body and member, into position to engage the abutment portion of said member upon the turning of said collar relative to said member; cooperating abutment means on said collar and said body engageable to transmit torque from said body to said collar in the thread-engaging direction but permitting reverse rotation of said body relative to said collar, and cam means arranged between said bodyand collar acting upon such reverse rotation to retract the collar so as to free said abutment portions.

3. A tool of the class described comprising a body member including a threaded head portion and a coaxial shank portion, a collar member surrounding said body member and axially and rotatably movable relative thereto, said collar member having an eccentric abutment portion projecting oppositely from said shank portion, cooperating abutment means on said body and collar members for transmitting torque from said body member to said collar member in the threading-in direction of said head portion but permitting rotation of said body member relative to said collar member in the unthreading direction, and means between said body and collar members operative to displace said collar member toward said shank portion upon said relative rotation in the unthreading direction, the last-named means comprising means providing a cam surface on one of said members and follower means for said cam surface on the other of i 8 and a coaxial shank portion, a collar member surrounding said body member and axially and rotatably movable relative thereto, said collar member having an eccentric abutment portion projecting oppositely from said shank portion, and a pin and slot connection between said body and collar members of which the slot is so inclined that upon rotation of said body member relative to said collar member in the unthreading direction, said collar member will be displaced toward said shank portion.

5. A tool of the class described comprising a body member including a threaded head portion and a coaxial shank portion, a collar member surrounding said body member and axially and rotatablly movable relative thereto, said collar member having an eccentric abutment portion projecting oppositely from said shank portion, a generally circumferentially extending rib on one of said members and a circumferentially extending recess in the other of said members receiving said rib, said recess having axially extending end walls spaced apart a distance greater than said rib and adapted to be respectively abutted by the ends of said rib to transmit torque from said body member to said collar member, said rib having an inclined face on its side adjacent said shank portion, and follower means for said inclined face -on the other of said members, the inclination of said face being such that upon rotation of said body member relative to said collar member in the unthreading direction of said head portion, said collar portion will be moved toward said shank portion.

6. A tool of the class described comprising a body member including a threaded head portion and a coaxial shank portion, a collar member surrounding said body member and axially and rotatably movable relative thereto, said collar member having an eccentric abutment portion projecting oppositely from` said shan-k portion, one of said members having a circumferential slot and the other having a pin engaged in said slot, an axially extending slot joining said circurnferential slot and adapted to receive said pin to permit said collar member to be moved relative to said body member toward said shank portion, and a dog projecting into said circumferential slot and engageable by Said pin to transmit torque from said body member to said collar member in the threading-in direction of Said head portion, said dog yielding to pass said pin when said body member is reversely rotated relative to said collar member, whereby the threading-oli of said tool is permitted.

7. A tool for inserting a member having threaded front and rear ends and a lateral abutment therebetween, said tool comprising a head having a threaded forward end complemental to the rear end of the member, a collar surrounding the head and mounted thereon for relative rotational and axial sliding movement and having a forwardly projecting lateral abutment arranged for driving cooperation with the abutment on the member when the collar is in its axially forwardly projected position, and means interconnecting the head and collar, limiting the relative movement therebetween, holding the collar in the forwardly projected position upon the application of torque to the head in a direction to screw-in the member, and imparting an axial retracting force to the collar upon the ap plication of torque to the head in a direction to unscrew the member.

8. A tool in accordance with claim 7 characterized in that the means interconnecting the head and collar includes a cani and cam follower.

9. A tool in accordance With claim 7 characterized in that the means interconnecting the head and collar includes an inclined slot and a pin disposed in the slot.

10. A tool in accordance with claim 7 characterized in that the means interconnecting the head and collar includes a spring for retracting the collar and a catch resisting the force of the spring until the head is rotated relative to the collar to a predetermined point in an unscrewing direction.

GORI-IAM F. F'REER.

REFERENCES CITED The following references are of record in the fue of this patent:

UNITED STATES PATENTS Number Name Date 1,125,186 Schneider Jan. 19, 1915 1,155,662 Kleinsteuber Oct. 5, 1915 1,308,490 Funk July 1, 1919 1,384,415 Weichhart July 12, 1921 2,247,427 Mueller et al. July 1, 1941 

